DEBIAN-CVE-2021-41270

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Source
https://security-tracker.debian.org/tracker/CVE-2021-41270
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-41270.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-41270
Upstream
Published
2021-11-24T19:15:07Z
Modified
2025-10-10T19:30:13.821533Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

Symfony/Serializer handles serializing and deserializing data structures for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Symfony versions 4.1.0 before 4.4.35 and versions 5.0.0 before 5.3.12 are vulnerable to CSV injection, also known as formula injection. In Symfony 4.1, maintainers added the opt-in csv_escape_formulas option in the CsvEncoder, to prefix all cells starting with =, +, - or @ with a tab \t. Since then, OWASP added 2 chars in that list: Tab (0x09) and Carriage return (0x0D). This makes the previous prefix char (Tab \t) part of the vulnerable characters, and OWASP suggests using the single quote ' for prefixing the value. Starting with versions 4.4.34 and 5.3.12, Symfony now follows the OWASP recommendations and uses the single quote ' to prefix formulas and add the prefix to cells starting by \t, \r as well as =, +, - and @.

References

Affected packages

Debian:11 / symfony

Package

Name
symfony
Purl
pkg:deb/debian/symfony?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.4.19+dfsg-2+deb11u1

Affected versions

4.*

4.4.19+dfsg-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / symfony

Package

Name
symfony
Purl
pkg:deb/debian/symfony?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.4.19+dfsg-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / symfony

Package

Name
symfony
Purl
pkg:deb/debian/symfony?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.4.19+dfsg-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / symfony

Package

Name
symfony
Purl
pkg:deb/debian/symfony?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.4.19+dfsg-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}